Power-transmitter.



PATENTED SEPT. 1, 1903.

E. T. MOKAIG.

POWER TRANSMITTER.

APPLICATION FILED MAR. 23, 1903.

N0 MODEL,

WWW,

UNITED STATES Patented September I, 1903..

EDDY T. MCKAIG, OF CHICAGO, ILLINOIS.

POWER-TRANSMITTER.

SPECIFICATION forming part of Letters Patent No. 737,653, dated September 1, 1903.

Application filed March 2311903- To all whom it may concern:

Be it known that I, EDDY T. MCKAIG, a citi-" zen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Power-Transmitters, of which the following is a full, clear, and exact specifloat-ion.

My invention relates to that class of powertransmitters in which the power is transmitted from two opposed driving-disks to a friction-pulley presenting its periphery to the faces of the disks and movable thereacross; and my invention has for its primary object to transfer the motion of one disk to the other in the reverse direction without using direct gear-wheels between them, as the gears are necessarily large, expensive, heavy, and noisy.

With these ends in view my invention consists in certain features of novelty in the construction, combination, and arrangement of parts by which the said objects and certain other objects hereinafter appearing are attained, all as fully described with reference to the accompanying drawings and more particularly pointed out in the claims.

In the said drawings, Figure 1 is a plan view of myimproved power-transmitter. Fig. 2 is a cross-section thereof, taken on the line 2 2, Fig. 1. Fig. 3 is a similar section on the line 3 3, Fig. 1; and Fig. 4 is a longitudinal section on the line 4 4, Fig. 1.

1 2 are the aforesaid disks, which are suitably secured to shafts 3 4, respectively, and arranged opposite each other,with their shafts in axial alinement, and 5 is the aforesaid friction-pulley arranged between disks 1 and 2, with its periphery presented to the faces of both, so as to be engaged on opposite sides by the disks, and thus caused to rotate on an axis at right angles to the shafts 3 4. The pulley 5 is splined on a transverse shaft 6, as usual, and may be provided with the usual or any suitable means whereby it is caused to move along its shaft 6 from side to side of the disks and directly or substantially across their centers. As an example of a suitable means for accomplishing this the hub 7 of the disk is provided with a loose collar 8, to which is attached a yoke 9, having one end provided with a pin 10, running in a slot 11 of a bifurcated lever 12, which is pivoted at 13 and Serial No. 149,073. (No model.)

provided with a toothed segment 14, engaged by a toothedsegment 15 on a suitable operating-lever 16, so that when lever 16 is oscillated or moved back and forth the pulley 5 will be caused to move toward or from the centers of the disks 1 2.

The power derived from the rotation of the pulley 5 may betransmitted to the shaft, axle, or other member where it is desired for use by any suitable means. In the drawings I have shown the shaft 6 provided with a sprocket 17, which is connected by chain 18 to a sprocket 19 on an axle or shaft 20, which would be the preferable arrangement when the power-transmitter is used on an automobile or the like.

The power of the pulley 5 being dependent solely upon friction, it is necessary in the practicable application of power-transmitters of this type to have both of the disks 1 2, as well as the pulley 5, of considerable diameter, and hence direct gearing or cog-wheels between these disks for transmitting the motion of one to the other in the reverse direction is not feasible, for reasons before mentioned, and hence in order that the motion of the shaft 3, which may be regarded as the engineshaft or driving-shaft, may be transferred to the shaft 4 in the reverse direction, so that the pulley 5 will be driven from both sides and the pressure of the disks against its bearing neutralized, I employ a motion transmitting and reversing mechanism extending around said disks from their outer sides, so that their inner sides or opposed faces will be absolutely free and unobstructed for the movement of the pulley 5. In accomplishing this object without employing large gears,

which, as before explained, are not only expensive and heavy, but noisy, each of the shafts 3 4 is provided with a sprocket-wheel, these being shown at 21 22, respectively, and the sprocket 21 on shaft 3 is connected by chain 23 to a sprocket 24 on a counter-shaft 25, journaled in the lower ends of standards 26 and carrying a spur-gear 27, fixed thereon, which gear engages a spur-gear 28 on another counter-shaft, 29, mounted at or near the upper ends of standards 26 and having a sprocket 30, which is connected by chain 31 to the sprocket 22, thus transmitting the motion of shaft 3 to shaft 4 and reversing its direction by virtue of gears 27 28, which are always in nleshand may be comparatively small, simple, inexpensive, and easy-running pinions.

Having thus described my invention, what. I claim as new therein, and desire to secure by Letters Patent, is h 1. In a power-transmitter the combination of two opposed driving-disks, a driven pulley presenting its periphery to said disks and arranged between them, two counter-shafts, means for imparting the rotation of one of said shafts to the other in the reverse direction, means for driving one of said shafts in unison with one of said disks, and means for imparting the rotation of the other of said shafts to the other of said disks.

Witnesses:

F. A. HOPKINS, M. B. ALLSTADT. 

